The graphic co



lnitrh tats gatmtfffirt IMPROVED METALLIC. BLIND.

ehe Stlgrhule Infant in in llg'rst rttus alnit mit uniting pitt tf tigtsume.

TO WHOM IT MAY CONCERN:

Bue it known that I, J'. M. JOBIAIN, of Paris, in the Empire of France,have invented certain new and useful Improvements in the Manufacture ofVenetian and other Blinds; and I hereby declare the following to be afull, clear, and exact description of the same, reference being had tothe accompanying drawings.

The nature of my invention consists in forming a window-blind, door, orother similar article, of sheet iron or other sheet metal, clamped oruted, as hereinafter described, in order to impart to it the requisiterigidity and stiness.

It will be readily understood that sheet irofn or other sheet metal isentirely too iexible and limber in its ordinary state to'be adaptedwhile in such state to the purposes for which I propose to use it. Inorder to make it unyielding and stitfI take a piece of sheet iron, forinstance, of the size-.required for the door or blind, as the case maybe, and by means of blocks or clamps, and mechanism for actuating thesame, or by the employment of other suitable mechanism for stamping ormoulding, or clamping the metal, I `form around or near its edge aHating or moulding, having either a concave-convex or other suitableform. This moulding takes away from the sheet all its l'imberness andstii'ens it to such a degree that it will retain its shape underanypressure which a door or window-blind is required to withstand. I amthus enabled to make the blind or door of a single sheet of metal, whichnot only possesses extreme rigidity, but is very cheap and durable; andwhile it takes up much less room than-the ordinary blind or door,affords much more complete protection than they against danger from fireor thieves, &c. v

My invention for the reasons above given may be applied with specialadvantage to the manufacture of Venetianblinds, which can -be struck upand moulded rapidly 'and with comparatively littlelabor.

In order toi'orm inthe blind slats resembling those-of an ordinarywindow-blind,l"make in the metal `sheet/a series of incisions parallelwith and equidistant from each other. A portion of the sheet is thusdivided up into a series of strips to which the appearance of slats maybe given by twisting or turning each strip by suitable means until ithas the inclinedposition which ordinary slats occupy.

To enable others skilled in the art to understand and-use my invention,I will now proceed to describe the manner in which the same is or may beearried'into effect, by reference to the accompanying drawings, in whichFigure 1 represents an elevation of a Venetian blind composed of threesections or leaves.

Figure 2 isa horizontal section on the 'line'Y Y.

e' Figure is a vertical section on the line XX.

Figure 4 is a top view of the blind, showing the sectionsfolded backinto a suitable recess formed in the window-frame. 4 l

Figures 5 and 6 are modifications of my invention.

The blind, shown in g. I, is composed o` three leaves A A. A" made ot`sheet iron about two millcniet'res in thickness. Each leat' has formedin it and near its edge a continuous concave-convex nionlflingor iuting,aaa, by which, as above explained, the iron is stilen'ed. 'Thefcontourof this moulding or fluting is shown in fig. 3. It will, of course, beunderstood that the form there` represented need not be strictly adheredto, as the flut-ing may have a more or.less ,ornamental and irregularformulas diled The Ebre@ leaves 1110 COH- nected by hinges, C C', whilethe leaf AH nearestthe window I is hinged thereto at C. They are capableof being'folded back against the frame P,.or in a recess 'formed in theframe so as to occupy but little room, as shown in lig. '-1.l They maybe hield in this position by means of claws b b, which engage withsuitable catches is the window-frame' Pg In order to form the slats ofthe blind, a series of incisions is made in the same parallel with andequidistant from each other. These incisions may be either straight, asshown at D, iig. I, or curved, as indicated at D', or they may be of.any shape desired. 'Thel blind, orrathcr a portion of it, is

thus divided up-into a series of strips, which, by being bent so as tooccupy an inclined position, as abovey explained, resemble in allessential respects the ordinary slats of wooden blinds. The positionoccupied by the strips when thus bent is shown' plainly in figs. Qlaud3, where the plane in which each .Slat 0r strip D lies is at angles tothe vertical plane ofv the blind.4 The blind when the leaves areextended, as shown in tig. l, may be locked or!held in position by meansof bolts m, or other suitable fastening devices.`

Figures Sand 6 represent my invention as applied to a door; the door ing. 5 being formed with blinds while that shown in fig. 6 has none. l

Figures 7 and 8 nre sections of the doors, shown respectively in figs.51 and 6. In :t case like the present, where the form of the piece issuch as to admit of two sots of mouldings, they may be formed as shownin the figures, thc convexity ofthe moulding surrounding Vthe part Qbeing upon one side of the door7 and the con vexity of the mouldingsurrounding the part above being on the opposite side. The door is thusstrengthened and made capable of resisting strain coming from eitherside. In case, however, that the convexity of the Hating is all upon ortowards one side of the door or blind, as seen in tig. l, thenl thisside of the blind or door should be turned towards the exterior of thebuilding, .for the reason that it would resist better the efforts of anyone attempting to brake or injure the shutter or door than the other orconcave" side.

It will be seen that my invention is capable ofvbeing varied in manyparticulars, so that the blinds or other articles to which it is applied`can be made highly ornamental; and,v as above said, besides being moredurable and cheaper than ordinary blinds, the blinds constructed inaccordance with my'invention afford better protection, and may be foldedaway so as to take up much less room than they. i

Having now described my invention, andthe manner in which the same is orlmay be carried iutoL-eifect, what I claim, and desire to secure byLetters Patent, isl 1. A window-blind or door constructed of a metallicplate fluted around and on its sides, and provided withV slats formed inthe said plate, as and for the purposes shown and described.

2. A window-blind or door, of sheet iron or other sheet metal, in whichthe slats are formed from strips partially detached from the said metalsheet and bent substantially as herein described. J. M. JOMAIN.

Witnesses:

BRrxrToN, F. F. RANDOLPH.

